<template>
  <view>
    <view class="search-box">
      <uni-search-bar :radius="100" maxlength="100" placeholder="请输入搜索内容" cancelButton="none" @confirm="search" @input="input" ></uni-search-bar>
    </view>
    <view class="sugg-list" v-if="searchResult.length !== 0">
      <view class="sugg-item" v-for="(item,i) in searchResult.goods" :key="i" @click="goodDetail(item)">
        <view class="goods-name">
          {{item.goods_name}}
        </view>
        <uni-icons type="arrowright" size="16" @click="clean"></uni-icons>
      </view>
    </view>
    <view class="history-box" v-else>
      <view class="history-title">
        <text>搜索</text>
        <uni-icons type="trash" size="17"></uni-icons>
      </view>
      <view class="history-list">
        <uni-tag :text="item" v-for="(item,i) in histories" :key="i" :inverted="true" @click="gotooodsList(item)"></uni-tag>
      </view>
    </view>
  </view>
</template>

<script>
  export default {
    data() {
      return {
        timer: null,
        kw: '',
        searchResult:[],
        historyList: []
      };
    },
    onLoad() {
      this.historyList = JSON.parse(uni.getStorageSync('kw') || '[]');
    },
    methods:{
      search(){
        
      },
      //input 输入事件
      input(e){
        clearTimeout(this.timer)
        console.log('inside input kw is',this.kw)
        this.timer = setTimeout(()=>{
          console.log("is bug??",e)
          this.kw = e;
          this.getSearchList()
        },500)
      },
      async getSearchList(){
        console.log('inside kwis ',this.kw)
        //判断搜索关键字是否为空
        if(this.kw.length === 0){
          this.searchResult = [];
          return;
        }
        const {data: res} = await uni.$http.get('/api/public/v1/goods/search',{query: this.kw});
        if(res.meta.status !== 200) return uni.$showMsg()
        this.searchResult = res.message;
        this.saveSearchHistory();
      },
      goodDetail(item){
        console.log(item.goods_id)
        uni.navigateTo({
          url: '/subpkg/goods_detail/goods_detail?goods_id=' + item.goods_id
        })
      },
      saveSearchHistory(){
        // this.historyList.push(this.kw)
        const set = new Set(this.historyList);
        set.delete(this.kw)
        set.add(this.kw)
        this.historyList =  Array.from(set)
        
        uni.setStorageSync('kw',JSON.stringify(this.historyList));
        
      },
      clean(){
        this.historyList = [];
        // uni.setStorageSync('kw','[]')
        // uni.clearStorageSync('kw')
        uni.removeStorageSync('kw');
      },
      gotooodsList(kw){
        uni.navigateTo({
          url: '/subpkg/goods_list/goods_list?query='+kw
        })
      }
    },
    computed:{
      histories(){
        return [...this.historyList].reverse()
      }
    }
  }
</script>

<style lang="scss">
.search-box{
  position: sticky;
  top: 0;
  z-index: 999;
}
.sugg-list{
  padding: 0 5px;
  
  .sugg-item{
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 12px;
    padding: 13px 0;
    border-bottom: 1px solid #efefef;
    .goods-name{
      // 文字不允许换行（单行文字）
      white-space: nowrap;
      //溢出部分隐藏
      overflow: hidden;
      //文字溢出后用...代替
      text-overflow: ellipsis;
    }
  }
}
.history-box{
  padding: 0 5px;
  .history-title{
    display: flex;
    justify-content: space-between;
    height: 40px;
    align-items: center;
    font-size: 13px;
    border-bottom: 1px solid #efefef;
  }
  .history-list{
    display: flex;
    flex-wrap: wrap;
    .uni-tag{
      margin-top: 5px;
      margin-right: 5px;
      display: block;
    }
  }
}
</style>
